Distributor problems

looks like the rotor jammed up the works, but it's hard to imagine it was stronger than the drive-lug. What about a foreign object under the cap?
It's hard to figure that it ran for 10 seconds tho before it snapped, unless it was maybe partially broken from the get-go.
Maybe it seized in the lower bushing, but that doesn't explain the busted cap.... maybe you are dealing with multiple problems. hmmmmmmmm

just guessing, I am.